Astronomers using NASA’s James Webb Space Telescope have studied the atmosphere of TOI-199b, a rare Saturn-sized planet with temperatures around 175 degrees Fahrenheit. The findings mark the first detailed look at a temperate giant exoplanet.
The planet orbits a star more than 330 light-years from Earth and completes one orbit every 100 days. Researchers detected methane in its atmosphere using transmission spectroscopy during a seven-hour transit observed over 20 hours total.
NASA's James Webb Space Telescope has observed the super Earth 55 Cancri e and found evidence of a hydrogen-rich atmosphere. The planet, located 41 light years from Earth, has a surface hot enough to melt rock due to its extremely close orbit around its star.
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Astronomers used the James Webb Space Telescope to study the atmosphere of WASP-94A b, a tidally locked gas giant 690 light-years away. The observations revealed cloudy mornings and clear evenings on the planet. The findings were published in Science.
Researchers have identified an unknown compound absorbing specific wavelengths of light on both Saturn's moon Titan and the dwarf planet Pluto. The finding comes from data collected by the James Webb Space Telescope.
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Astronomers have found a planetary system around a red dwarf star where a rocky world orbits beyond two gas giants, challenging standard models of how planets form. The discovery around LHS 1903 suggests planets may arise sequentially rather than all at once.